2015 MERCEDES-BENZ B-CLASS HATCHBACK warning

Problems with the rear window heating
Problem
Possible causes/consequences and
M
MSolutions The rear window heating
has switched off prema-
turely or cannot be acti-
vated. The battery has not been sufficiently charged.
X Switch off any consumers that are not required, e.g. reading lamps,
interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window heating
can be activated again. Switching air-recirculation mode
on/off
General notes You can deactivate the flow of fresh air if
unpleasant odours are entering the vehicle from
outside. The air already inside the vehicle will
then be recirculated.
If you activate air-recirculation mode, the win-
dows can mist up more quickly, in particular at
low temperatures. Only use air-recirculation
mode briefly to prevent the windows misting up.
Switching on/off X
Turn the key to position 2in the ignition lock
(Y page 126).
X To activate: press theebutton.
The indicator lamp in the ebutton lights
up.
Air-recirculation mode is activated automati-
cally:
R at high outside temperatures
R at high levels of pollution
When air-recirculation mode is activated auto-
matically, the indicator lamp in the ebutton
is not lit. Outside air is added after about
30 minutes.
X To deactivate: press theebutton.
The indicator lamp in the ebutton goes
out. i
Air-recirculation mode is deactivated auto-
matically:
R after approximately five minutes at outside
temperatures below approximately 7 †
R after approximately five minutes if the
"Cooling with air dehumidification" func-
tion is deactivated
R after approximately 30 minutes at outside
temperatures above approximately 7 † if
the cooling with air dehumidification func-
tion is activated Convenience opening or closing using
the air-recirculation button G
WARNING
When using convenience closing, you could
become trapped within the sweep of the clos- ing window. There is a risk of injury.
Monitor the entire closing procedure when
using convenience closing. When closing,
make sure that no one has any parts of the
body within the closing area. G
WARNING
During convenience opening parts of the body could be drawn in or become trapped
between the side window and window frame.
There is a risk of injury.
When opening, make sure that nobody is
touching the side window. If someone
becomes trapped, immediately press
the W switch in the door to stop the move-
ment of the side windows. To continue closing
the side window, pull on the Wswitch. 120
Operating the climate control systemClimate control

X
Convenience closing feature: press and
hold the ebutton until the side windows
are closed.
The indicator lamp in the ebutton lights
up. Air-recirculation mode is activated.
If parts of the body are in the closing area during convenience closing, proceed as follows:
X Press the Wbutton for opening/closing
the side windows.
The side windows stop.
X To then open the side windows, press the
W button again.
or
X Press the ebutton for longer than two
seconds.
The side windows move in the opposite direc- tion.
X Convenience opening feature: press and
hold the ebutton until the side windows
are opened. The side windows move back to
their original positions.
The indicator lamp in the ebutton goes
out. Air-recirculation mode is deactivated.
Notes on the reversing feature for the side win-
dows (Y page 82).
If you open the side windows manually after
closing them using the convenience closing fea- ture, they will remain in this position when
opened using the convenience opening feature. Pre-entry climate control via key
Before getting in, the vehicle interior can be
briefly warmed or ventilated in advance. In addi- tion, the air from the air vent can be pre-cooled.
The high-voltage battery must be sufficiently
charged before the "Pre-entry climate control
via key" function can be activated.
Activating/deactivating the pre-entry cli-
mate control (via key)
When the vehicle is unlocked using the key or
KEYLESS-GO, the climate control functions are
activated.
The pre-cooling and pre-heating climate control functions last up to 5 minutes.
When the vehicle is pre-cooled, the following
functions are activated as necessary:
R Automatic climate control
R Cooling with air dehumidification
R Blower When the vehicle is pre-heated, the following
functions are activated as necessary:
R Automatic climate control
R Blower
R Seat heating
R Windscreen heating
R Rear window heating
Pre-entry climate control is automatically
switched off when operational readiness mode
is requested.
Activating/deactivating pre-entry climate
control (via key)
You can activate and deactivate the pre-entry
climate control (via key) function using the on-
board computer in the E-CELL
E-CELL submenu
(Y page 185).
i If the charge status of the high-voltage bat-
tery is below the specified minimum charge
status, pre-entry climate control will not be
activated even if it has been set. Pre-entry climate control at departure
time and immediate pre-entry climate control
Important safety notes G
WARNING
If persons (particularly children) are exposed
to heat or cold for a prolonged period, there is a risk of serious or even fatal injuries. Never
leave persons (particularly children) unatten-
ded in the vehicle.
General notes Using the "Pre-entry climate control at depar-
ture time" function, you can cool or heat the
vehicle interior prior to the desired departure
time.
When using the "Pre-entry climate control at
departure time" function, the charge status of
the high-voltage battery must be higher than the
specified minimum charge status.
The running time of the climate control may be
reduced if:
R the vehicle is not connected to an electric
power supply
R the high-voltage battery is not fully charged Operating the climate control system
121Climate control Z

Switching on/off
X
Turn the key to position 0in the ignition lock
or remove it (Y page 126).
X To activate: press theÌbutton.
The indicator lamp in the Ìbutton lights
up.
X To deactivate: press theÌbutton.
The indicator lamp in the Ìbutton goes
out.
i Residual heat is deactivated automatically:
R after approximately 30 minutes
R when the ignition is switched on
R if the battery voltage drops Air vents
Important safety notes
G
WARNING
Very hot or very cold air can flow from the air vents. This could result in burns or frostbite in the immediate vicinity of the air vents. There
is a risk of injury.
Make sure that all vehicle occupants always
maintain a sufficient distance to the air out-
lets. If necessary, redirect the airflow to
another area of the vehicle interior.
In order to ensure the direct flow of fresh air
through the air vents into the vehicle interior,
please observe the following notes:
R keep the air inlet between the windscreen and
the bonnet free of blockages, such as ice,
snow or leaves
R never cover the vents or ventilation grilles in
the vehicle interior
i Optimal climate control function is achieved
by opening the air vents fully and setting the
adjusters to the middle position. Adjusting the centre air vents
X
To open the centre air vent: turn the
adjuster in one of centre air vents :to the
left.
X To close the centre air vent: turn the
adjuster in one of centre air vents :clock-
wise as far as it will go. Adjusting the side air vents
:
Side window demister vent
; Side air vent
X To open a side air vent: turn the adjuster in
side air vent ;to the left.
X To close a side air vent: turn the adjuster in
side air vent ;clockwise as far as it will go. Air vents
123Climate control Z

Useful information
i This Owner's Manual describes all models,
series and optional equipment for your vehi-
cle that were available at the time of going to
press. National variations are possible. Note
that your vehicle may not be equipped with all
of the functions described. This is also the
case for systems and functions relevant to
safety.
i Read the information on qualified specialist
workshops: (Y page 23). Running-in notes
In certain driving and driving safety systems, the sensors adjust automatically while a certain dis-
tance is being driven after the vehicle has been delivered or after repairs. Full system effective- ness is not reached until the end of this teach-in
process.
Brake pads/linings and discs that are either new or have been replaced only achieve optimum
braking effect after several hundred kilometres
of driving. Compensate for the reduced braking
effect by applying greater force to the brake
pedal. Driving
Important safety notes
G
WARNING
Objects in the driver's footwell may restrict
the clearance around the pedals or block a
depressed pedal. This jeopardises the oper-
ating and road safety of the vehicle. There is a risk of an accident.
Stow all objects securely in the vehicle so that
they do not get into the driver's footwell.
Always fit the floormats securely and as pre-
scribed in order to ensure that there is always sufficient room for the pedals. Do not use
loose floormats and do not place several floor- mats on top of one another. G
WARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
R shoes with thick soles
R shoes with high heels
R slippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals. G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available
with limitations, or not at all. This could affect, for example, the power steering and the brake
boosting effect. You will require considerably
more effort to steer and brake. There is a risk of an accident.
Do not switch off the ignition while driving. G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
! Before driving away, you must ensure that,
for your own safety and to avoid damage, the charging cable has been removed from the
vehicle socket. Otherwise, you cannot shift
the transmission out of position P.
The braking performance of the electric motor
using recuperative braking is, in some operating modes, either reduced or not effective:
R when the charge status of the high-voltage
battery increases
R if the high-voltage battery is not yet at a nor-
mal operating temperature
R when driving close to the maximum speed
R when the vehicle is almost stationary
R in transmission position N
R during and after ESP stability control
If you do not make an additional effort to apply
the brake yourself, the braking effect may not be Driving
125Driving and parking Z

Further information on situations where an indi-
cator lamp either fails to go out after starting the drive system or lights up while driving
(Y page 215).
If Start/Stop button :has not yet been
pressed, this corresponds to the key being
removed from the ignition.
X To switch on the power supply: press
Start/Stop button :once.
The power supply is switched on. You can now activate the windscreen wipers, for example.
The power supply is switched off again if:
R the driver's door is opened and
R you press Start/Stop button :twice when in
this position
X To switch on the ignition: press Start/Stop
button :twice.
The ignition is switched on.
If you press Start/Stop button :once when
in this position, the ignition is deactivated
again.
Removing the Start/Stop button
You can remove the Start/Stop button from the
ignition lock and start the vehicle as normal
using the key.
You can only switch between Start/Stop button
mode and key operation when the vehicle is sta- tionary.
You must also engage park position P.
X Remove Start/Stop button :from ignition
lock ;.
You do not have to remove the Start/Stop but-
ton from the ignition lock when you leave the
vehicle. You should, however, always take the
key with you when leaving the vehicle. As long as
the key is in the vehicle:
R the vehicle can be started using the Start/
Stop button
R the electrically powered equipment can be
operated Starting the vehicle
Important safety notes G
WARNING
If children are left unsupervised in the vehicle, they could:
R open doors, thereby endangering other per-
sons or road users
R get out and be struck by oncoming traffic
R operate vehicle equipment and become
trapped, for example
In addition, the children could also set the
vehicle in motion by, for example:
R releasing the parking brake
R shifting the transmission out of park posi-
tion P
R starting the vehicle's drive system
There is a risk of an accident and injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children and animals unattended in the vehi-
cle. Keep the keys out of the reach of children.
Vehicles with an electric motor generate signif- icantly less noise than vehicles with internal
combustion engines. As a result, your vehicle
may not be heard by other road users in certain
situations. This can happen, for example, when
you are parking and your vehicle is not seen by
other road users. This requires you to adopt a
particularly anticipatory driving style, as it is
necessary to allow for the possibility that other
road users may behave unpredictably.
The vehicle can be equipped with a sound gen-
erator. The sound generator is activated so that other road users can hear your vehicle better.
The sound generator is activated at speeds
under 30 km/h and switches off automatically
at higher speeds.
Starting procedure using the Start/
Stop button The Start/Stop button can be used to start the
vehicle manually without inserting the key into
the ignition lock. The key must be in the vehicle
and the Start/Stop button must be inserted in
the ignition lock. Driving
127Driving and parking Z

You can start the drive system if a valid key is in
the vehicle. Switch off the drive system and
always take the key with you when leaving the
vehicle, even if you only leave it for a short time. Pay attention to the important safety notes.
X Depress the brake pedal and keep it
depressed.
X Press the Start/Stop button once
(Y page 126).
The drive system is started. Once the vehicle
is ready to be driven, the Ready
Ready display
(Y page 172) appears in the lower part of the
multifunction display.
Starting procedure with the key To start the drive system using the key instead
of the Start/Stop button, pull the Start/Stop
button out of the ignition lock.
X Turn the key to position 3(Y page 126) in the
ignition lock and release it.
The drive system is started. Once the vehicle
is ready to be driven, the Ready Readydisplay
(Y page 172) appears in the lower part of the
multifunction display. Pulling away
The vehicle can be equipped with a sound gen-
erator. At low speeds, an electric vehicle makes
less noise than a vehicle with a combustion
engine. The sound generator is activated so that
other road users can hear your vehicle better.
The sound generator is activated at speeds
under 30 km/h and switches off automatically
at higher speeds.
X Depress the brake pedal and keep it
depressed.
X Move the DIRECT SELECT lever to position D
or R.
X Release the brake pedal.
X Carefully depress the accelerator pedal.
The electric parking brake is automatically
released (Y page 146).
The red !indicator lamp in the instrument
cluster goes out.
The vehicle locks centrally once you have pulled
away. The locking knobs in the doors drop down. You can open the doors from the inside at any
time. It is only possible to move the DIRECT SELECT
selector lever from position
Pto the desired
selector lever position if you depress the brake
pedal. The parking lock is then deactivated and
the electrical parking brake is released auto-
matically. If the brake pedal is not depressed,
the DIRECT SELECT lever can still be moved but
the parking lock remains engaged.
Make sure that no charging cables are connec-
ted. The parking lock cannot be released if a
charging cable is connected. Hill start assist
Hill start assist will aid you when pulling away on
a hill. It holds the vehicle for a short time after
you have removed your foot from the brake
pedal. This gives you enough time to move your foot from the brake pedal to the accelerator
pedal and depress it before the vehicle begins to
roll away. G
WARNING
After a while, hill start assist no longer holds
the vehicle and it may roll away. There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill start assist is not active if:
R you are pulling away on a level road or a
downhill gradient
R the DIRECT SELECT lever is in position N
R the electric parking brake is applied
R ESP ®
is malfunctioning
Further information on holding the vehicle sta-
tionary on uphill gradients (Y page 131). Transmission
Important safety notes
Shift the DIRECT SELECT lever to position P
when the drive system is switched off and the
vehicle is stationary. Park position Pis engaged
and the electric parking brake is applied auto-
matically. 128
TransmissionDriving and parking

If the DIRECT SELECT lever cannot be engaged
in park position P, the parking brake is engaged
automatically.
Observe the important safety notes on switch-
ing ESP ®
on and off (Y page 66). DIRECT SELECT lever
Overview of transmission positions j
Park position with parking lock
k Reverse gear
i Neutral
h Drive
The DIRECT SELECT lever is on the right of the
steering column.
The DIRECT SELECT lever always returns to its
original position. The current transmission posi- tion P,R, Nor Dappears in the transmission
position display in the multifunction display
(Y page 129).
Transmission position and drive pro-
gram display The current transmission position and drive pro-
gram appear in the multifunction display. :
Transmission position display
; Drive program display The arrows in the transmission position display
show how and into which transmission positions
you can shift using the DIRECT SELECT lever.
If the transmission position display in the mul-
tifunction display is not working, you should pull
away carefully to check whether the desired
transmission position is engaged. Ideally, you
should select transmission position D.
Engaging park position P j
Park position with parking lock
k Reverse gear
i Neutral
h Drive
X Push the DIRECT SELECT lever in the direction
of arrow P.
Transmission position display Pis shown in
the multifunction display.
When you have engaged park position P, make
sure that the transmission position display
shows Pin the multifunction display.
You can only engage park position Pwhen the
vehicle is stationary.
The transmission shifts into park position P
automatically if you open the driver's door when
the vehicle is stationary or when driving at very
low speed with the transmission in position Dor
R.
In addition, a warning tone sounds and a display message is shown.
Depressing the brake and pushing the DIRECT
SELECT lever up or down disengages the park-
ing lock. The transmission is in neutral N.
In order to shift from park position Pdirectly into
R or D:
R depress the brake pedal and
R push the DIRECT SELECT lever up or down
past the first point of resistance Transmission
129Driving and parking Z

Engaging reverse gear R
!
Only shift into reverse gear
Rwhen the vehi-
cle is stationary. You could otherwise damage the vehicle's drive system.
X If the transmission is in position Dor N: push
the DIRECT SELECT lever up past the first
point of resistance.
X If the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT lever up past the first point of resistance.
Shifting to neutral N G
WARNING
If children are left unsupervised in the vehicle, they could:
R open doors, thereby endangering other per-
sons or road users
R get out and be struck by oncoming traffic
R operate vehicle equipment and become
trapped, for example
In addition, the children could also set the
vehicle in motion by, for example:
R releasing the parking brake
R shifting the transmission out of park posi-
tion P
R starting the vehicle's drive system
There is a risk of an accident and injury.
When leaving the vehicle, always take the key with you and lock the vehicle. Never leave
children and animals unattended in the vehi-
cle. Keep the keys out of the reach of children.
X If the transmission is in position Dor R: push
the DIRECT SELECT lever up or down to the
first point of resistance.
X If the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT lever up or down to the first point of resist-
ance.
When the drive system is switched off, the trans-
mission shifts to Nautomatically.
With the key: if you then open the driver's door
or the front-passenger door or remove the key
from the ignition, the transmission automati-
cally shifts to P. With the Start/Stop button:
if you then open
the driver's door or the front-passenger door,
the transmission automatically shifts to P.
If you want the transmission to remain in neutral N, e.g. when having the vehicle cleaned in an
automatic car wash with a towing system:
With the key:
X Switch the ignition on.
X Depress the brake pedal and keep it
depressed.
X Shift to neutral N.
X Release the brake pedal.
X Release the electric parking brake.
X Switch off the ignition and leave the key in the
ignition lock.
With the Start/Stop button:
X Remove the Start/Stop button from the igni-
tion lock.
X Insert the key into the ignition lock.
X Switch the ignition on.
X Depress the brake pedal and keep it
depressed.
X Shift to neutral N.
X Release the brake pedal.
X Release the electric parking brake.
X Switch off the ignition and leave the key in the
ignition lock.
Engaging drive position D X
If the transmission is in position Ror N: push
the DIRECT SELECT lever down past the first
point of resistance.
X If the transmission is in position P: depress
the brake pedal and push the DIRECT SELECT lever down past the first point of resistance. 130
TransmissionDriving and parking